﻿<blockquote class="extDef">
NOTE&nbsp; Definition according to ISO/CD 10303-41:1992<br>
A measure value is a value as defined in ISO 31-0 (clause 2).</blockquote>

<blockquote class="note">
NOTE&nbsp; <em>IfcMeasureValue</em> is a select data type for most basic measure types coming from ISO 10303-41.  Select item <em>IfcNonNegativeLengthMeasure</em> is in addition to ISO 10303-41.
</blockquote>

<blockquote class="note">
NOTE&nbsp; Corresponding ISO 10303 name: measure_value, please refer to ISO/IS 10303-41 for the final definition of the formal standard.
</blockquote>

<blockquote class="history">
HISTORY&nbsp; New type in IFC1.5.1.
</blockquote>

<blockquote class="change-ifc2x4">
IFC 2x4 CHANGE&nbsp; <em>IfcNonNegativeLengthMeasure</em> added.
</blockquote>